Smokejack and the like



Jams 24 192% W. T. KRAUSCH SMOKEJACK AND THE LIKE i ed Jan. 2. 1923 oaooooucotroooopoot a w r j 0% w w w 3 g; N 1125,2385 W Patented June 24, 1924s WALTER EILKRAUSCI-I, OF LA GRANGE, ILLINOIS.

SMOKEJACK AND THE LIKE.

Application filed January To all whom it may concern:

Be it known that I, l/VALTER T. KnAUsoH, a citizen of the United States, and a resident of La Grange, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Smokejacks and the like, of which the following is a description, reference being had to the accompanying drawings, which form a part of my specification.

My invention relates more particularly to an improved smoke jack for use in locomotive or engine houses and the like, although the invention is equally adaptable for use as a ventilator or other similar devices.

The invention has for its object the provision of a construction formed primarily of thin sheet metal, provided preferably both interiorly and exteriorly, that is to say on either or both sides of the metal, with a protective coating adapted to resist fire and to protect the metal against the action of" sulphuric fumes as well as the elements. With my invention a smoke jack may be made of materially less weight than has heretofore been the case and as a result the weight on the roof-timbers will be greatly lessened; While at the same time the initial cost, as well as the cost of upkeep, is materially reduced.

The objects and advantages of my inven' tion will be readily comprehended from the detailed description of the drawings, wherein Figure 1 is an elevation and partial 1ongitudinal section of my improved smoke jack and its mounting on the roof timbers.

F igu-re 2 is a longitudinal sectional view.

Figure 3 is a cross sectional view taken on the line 33 of Figure 1 looking in the direction of the arrows.

Figure 4: is a cross sectional view taken on the line 4-4 of Figure 1.

In the particular exemplification of the invention it has been shown in the nature of a smoke jack for an engine house and consists of the conduit or main stack 10 disposed upwardly through a suitable opening in the roof of the building as indicated at 11; the lower end of the stack being provided with a hood or skirt portion 12 flared in the usual manner so as to extend entirely over the smokestack of a locomotive. The lower flared end or skirt portion 12 is suitably supported from the roof timbers or joists indicated at 13 by suitable strapsor 2, 1923'. Serial No. 610,161. I

hangers 14 which may be bolted to the roof timbers as shown at 15 and riveted or bolted to the lower or flared end of the skirt por-. tion as shown at 16. In order that the skirt portion may have proper flare, it is usual .to construct the same of a number of sheets which are riveted together as shown at 17 in Figure 1.

The upper end or stack portion 10 is prefv erably further supported in vertical position by means of a hood or collar 18 secured about the opening in the roof l1 and the hood portion 18 also preferably constructed of a protected sheet metal similar to that entire surface of the stack, has become thoroughly set so as to securely cement the asbestos to the metal, the entire asbestos surface, namely the asbestos coating on the interior and exterior of the stack or on both sides or surfaces on the sheet metal, is then given a coating consisting preferably of liquid glass sufficient to thoroughly fill the V pores or interstices of the asbestos covering or layer.

In employing the invention as disclosed in the drawing, the sheet metal is first cut and formed into shape to provide a smoke jack or Ventilating conduit of the desired con figuration or shape and preferably with a lap joint as shown at 19 in Figure 4; the lapped metal bein preferably suitably riveted as at 20. The smoke jack or ventilating conduit of sheet metal, on both the inner and outer surfaces thereof, as Well as the lapped and riveted portion thereof, is provided with an adhesive coating, preferably of front end cement or of liquid glass, to which a coating or covering of plastic or sheet asbestos material is then applied be fore the coating or liquid glass has become set. The adhesive or cementing material, with the asbestos covering, is then allowed to set or harden and the outer surface of the asbestos material or protective covering is then preferably provided with a coating of liquid glass in quantity sufiicient to fill the pores or interstices of the asbestos; the outer coating of glass being allowed to dry before the smoke jack is erected or put into use.

With my invention, a smoke ack or ventilating conduit is provided which will resist the action of fire and sulfuric fumes as well as the action of the elements; while at the same time comparatively thin sheet metal may be employed and consequently the weight and cost materially reduced and as a result the weight on the roof-timbers niaterially decreased.

It is apparent that my improved method and the resultant material. may be employed for other purposes or conduits Where it is subjected to gaseous fumes or exposed to the elements and that materially thinner sheet metal may be used than has heretofore been the case while at the same time being capable of resisting the destructive action of the elements or fumes for a longer period of time, thereby greatly reducing the cost of maintenance.

"Vhat I claim is 1. A. smoke jack composed of sheet metal formed into shape, and an inner and outer covering of asbestos cemented to the metal to constitute a unit therewith.

2. A smoke jack composed of sheet metal cut and riveted into shape, asbestos intimately secured to the metal by a cementitious material, and a coating of gas resisting material for impregnating the asbestos.

3. An article of the character described, composed of sheet metal, a layer of asbestos cemented into intimate relation With the metal, and a coating of liquid applied to the outer surface of the asbestos.

4. A smoke jack composed of sheet metal, the inner and outer surfaces of the jack being provided with asbestos cemented thereto to provide a unitary structure, and a coat ing of liquid glass on the exposed surface of the asbestos. V

5. The herein described method, which consists in forming a smoke jack or conduit out of sheet metal, coating the inner and outer surfaces of the smoke jack or conduit with liquid glass, applying asbestos to said coating of liquid glass, allowing the liquid glass to set or dry and then coating the exposed surface of the asbestos with liquid glass.

WALTER T. KRAUSCH. Witnesses FRED C. GARRETT, ROBERT H. SALISBURY. 

